Marsh, Adam, Prakash, Mahesh, Semercigil, S. E and Turan, O. F (2009) Predicting the Dynamic Structural Response Controlled by a Sloshing Absorber using SPH. In: Proceedings of the 7th International Conference on Computational Fluid Dynamics in the Minerals and Process Industries. Witt, P. J and Schwarz, M. P, eds. CSIRO, Melbourne, Australia, pp. 1-7.

Abstract

Other title: "Computational fluid dynamicc: seventh international conference on CFD in the minerals and process industries" A sloshing absorber consists of a container, partially filled with fluid to possess a free surface. The absorber is attached to the structure to be controlled, and relies on the structure’s motion to excite the liquid. Consequently, sloshing waves are produced at the free surface, possessing energy dissipative qualities. The behaviour of liquid sloshing has been well documented in the literature, although its use as a structural control agent has attracted considerably less attention. The sloshing absorber’s ability to control a light resonant structure is demonstrated experimentally. The effect of liquid depth on control performance is analysed. An ideal range is identified. Smoothed Particle Hydrodynamics (SPH) is then used to model the dynamic structure/sloshing absorber system. The objective is to demonstrate the technique’s ability to reliably predict fluid-structure interaction forces. When tuned properly, these interaction forces generate the required control of excessive structural oscillations. A series of shallow liquid levels are investigated to generate travelling free surface waves. Predicted free surface shapes and the resulting structural response are then compared to those observed experimentally. Close correspondence is reported between predictions and experiments, for a wide range of liquid depths. Seventh International Conference on CFD in the Minerals and Process Industries CSIRO, Melbourne, Australia 9-11 December 2009

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